There are different opinions as to the definition of ai but according to us2016preparing, it is any computerised system exhibiting behaviour commonly regarded as requiring intelligence.
Conversational ai, therefore, is any system with the ability to mimick human-human intelligent conversations by communicating in natural language with users [1]}.
Conversational ai, sometimes called chatbots, may be designed for different purposes.
These purposes could be for entertainment or solving specific tasks, such as plane ticket booking (task-based).
When the purpose is to have unrestrained conversations about, possibly, many topics, then such ai is called open-domain conversational ai.
ELIZA, by weizenbaum1969computer, is the first acclaimed conversational ai (or system).
Its conversations with humans demonstrated how therapeutic its responses could be.
Staff of weizenbaum1969computer reportedly became engrossed with the program during interactions and possibly had private conversations with it [1]}.
